6-[(4′-Ethoxycarbonyl-[1,1′-biphenyl]-4-yl)oxy]hexanoic acid

In the title compound, C₂₁H₂₄O₅, the dihedral angle between the benzene rings is 19.57 (15)°. In the crystal, the mol­ecular arrangement makes up head-to-head centrosymmetric dimers assembled by pairs of O—H...O bonds; this arrangement builds a graph-set ring motif of R²₂(8). The dimers are linked into a tape running along the b-axis direction through C—H...O inter­actions. The packing is further consolidated by C—H...π inter­actions, forming layers parallel to (10-2).